A juice for dry skin

image source:wiki-individual images combined are  in the public domain.

Mix the juice of :

1 cucumber

3 small pieces of ginger and

2 oranges.

Drinking this on a regular basis will improve the complexion and reduce dryness of the skin in a person.

Portia tree leaves for skin rashes

image source:wiki:image in public domain-Thespesia populnea

aka :gangaraavi,poovarasu,paraspipal,porush,plaksa in Indian languages.
The leaves are washed well and made into a paste.When the paste is applied on skin rashes,they heal faster.It works for many skin ailments.

Pongamia oil as Biodiesel

Pongamia pinnata -pictures released into the public domain by author Madhavi

Pongamia seeds used for Biodiesel.

Common names are :Indian Beech tree,Karanj in Hindi and Sanskrit.
The seeds are used to make Pongamia oil which is a well known alternate fuel.It is a bio diesel and little modification is required to make generators run with this relatively inexpensive oil. Further research is being done to find cheaper extraction methods.